Staking basically means you use your coins to support the network (at least that is how it works when you stake via native wallets on your desktop, i am not sure if this is also true for tokens that you stake via one of those Defi pools). So yeah in the end it is a consensus mechanic just like proof of work. I think that proof of stake will become more and more popular now and in the next years because of environmental reasons. Tesla was already accepting bitcoin as a method of payment but then they had to take that decision back because of protests because bitcoin has to be mined and for that you need a lot of electricity.